Shop OBEX P1 Docs P2 Docs Learn Events
PING))) Sensor angle problem... — Parallax Forums

PING))) Sensor angle problem...

chazbrazilchazbrazil Posts: 27
edited 2007-09-11 03:35 in BASIC Stamp
I'm considering using the PING))) Sensor as a range finder to track the progress of a metal ball (1" diameter) for a school project. The distance I'd be working with would be within 2'. Does anyone have any experience with the PING))). Or perhaps a better suggestion for a range finder?? Thanx!

Comments

  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-09-06 17:36
    Hello,

    Your subject mentions an Angle Problem, but your message says nothing about this. A metal ball will inherently reflect no matter which way it is moving. Take care.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage
    Parallax Tech Support
  • chazbrazilchazbrazil Posts: 27
    edited 2007-09-06 17:53
    Forgive me, my question had nothing to do with direction. What I was wondering is if the sensor angle was tight enough to discern the ball from the metal track it runs on, or even the backdrop wooden plank. Thanks again!
  • Chris SavageChris Savage Parallax Engineering Posts: 14,406
    edited 2007-09-06 19:20
    Hello,

    That would depend on a lot of factors. You may have to test the setup to see if there is anything which is more likely to reflect a signal than the ball. This will depend on material composition, facing or perpendicular surfaces, etc. Take care.

    ▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔▔
    Chris Savage
    Parallax Tech Support
  • Philip GamblinPhilip Gamblin Posts: 202
    edited 2007-09-08 02:15
    I don't think the ping will be able to separate the ball from the track. If the ball was hanging in space, you have a better chance of detecting it.
  • DJSandbergDJSandberg Posts: 56
    edited 2007-09-11 03:35
    Hello,

    I think your best bet would be a Sharp GP2D12 Infrared Object Sensor if the height of the ball in relation to the robot is consistant.· It has a 2-3 mm beam and works within the range you mentioned.

    Daryl
Sign In or Register to comment.